Brexit. Why do Brits want Out of the EU?

Actually Britain did have a number of colonies or overseas territories when it joined the EU, though I don't know their exact legal status. Here I include Bermuda, The Falkland Islands, The British Virgin Islands and others.

I suspect the issue in the UK has more to do with the contemporary facts attendant to that free movement within the EU than the Idea of it decades ago when the Treaty was signed. Moreover, subsequent EU actions regarding asylum and the admission of refugees, coupled with that free movement, have changed the reality significantly. Ultimately the EU itself is responsible for the consequences of the decisions it makes in that area. I believe this is a political issue today in Germany as well as in the UK.

But xenophobia is a topic (not only on the political level) in Germany as well as in other EU-countries.

and then the strange thing happens that when a blond and blueeyed Scandinavian is told to "go back where you came from" it is racism
and when the same person is against EU s/he is a racist.

But the ones being against it are called right winged extremists, racist, that you can see and hear in more than one country.
The 52% of the Brits voting for Brexit certainly were called names,

Gove will be next PM.

Perhaps really a new "EU-" treaty should be made.
This free movement had been in the EU even before the UK became a member.

The UK is no longer going to be a member, therefore not obligated to enforce free immigration

You say Germany has 5% migrants?

The EU countries hosting the largest number of EU migrants in 2010 were Germany (3.7 million), Spain (2.5 million), France (2.4 million), the UK (2.2 million) and Italy (1.2 million).

Okay, but I believe the negotiations taking place will also deal with the EU and UK relationship after that two year period.

Once the article 50 trigger is pulled, the EU council of ministers will by qualified majority voting agree a negotiation mandate, in the form of directives to the commission.

They will have to agree on the terms for divorce, essentially a set of instructions and red lines for the European commission, which would be in charge of managing talks. The process is designed to give the EU the upper hand over the departing state, according to Andrew Duff, a former Liberal Democrat MEP, who helped devise article 50. “We could not allow a seceding state to spin things out for too long. The clause puts most of the cards in the hands of those that stay in.”

The full scale of the task facing Whitehall will become clear. The UK will have to renegotiate 80,000 pages of EU agreements, deciding those to be kept in UK law and those to jettison. British officials have said privately that nobody knows how long this would take, but some ministers say it would clog up parliament for years.

As UK still is and will be a member for the next two years why is it then treated as if it left the 24th.
Junker yeall at a British member to "get out of here".
Cameron is not allowed to take part in meetings
Merkel did not invite UK /Cameron) to the discussion only France and Italy.
I really have the impression Junker and Merkel are happy to see United Kingdom go and the Scandinavians are sad.

Sweden had 21,5% foreigners or foreign born people 2014